CN102844117A

CN102844117A - Wear-resistant roller

Info

Publication number: CN102844117A
Application number: CN2011800192504A
Authority: CN
Inventors: D.D.奥尔森
Original assignee: FLSmidth AS
Current assignee: FLSmidth AS
Priority date: 2010-04-16
Filing date: 2011-03-14
Publication date: 2012-12-26
Also published as: ZA201207462B; EP2558205B1; WO2011128789A3; EP2558205A2; WO2011128789A2; US20130023393A1; AU2011241902A1

Abstract

A description is given of a method for producing a wear-resistant roller for crushing of particulate material, such as crude ore for use in the mineral industry, by which method the surface region of the roller (1) is provided with a plurality of recesses (2) into each of which a wear-resistant component (3) is embedded. The method is characterized in that at least some of the material around each recess (2) is plastically deformed after the wear-resistant component (3) is placed in the recess and in that the deformed material changes the shape of the recess (2) and secures the wear-resistant component (3) to the roller (1).

Description

Wear resistant roll

Technical field

The present invention relates to make the method for wear resistant roll, this wear resistant roll is used for crushing such as the granular materials of the tcrude ore of extractive industry, and through this method, the surf zone of roller is equipped with a plurality of recesses, and in each said recess, embedding has wear member.This invention also relates to wear resistant roll constructed in accordance.

Background technology

Wear resistant roll can for example be used to the to crush high pressure roller milling train of granular materials, vertical rolls milling train or similar devices.

Wear resistant roll from the known the above-mentioned type of EP 0516952B1.This European patent has been described a kind of roller mill, and wherein said roller comprises a plurality of cylindrical pin that are embedded in the crushing surface.This cylindrical pin of being processed by high-abrasive material is inserted in the boring on crushing surface of roller, and connects or similar configuration is fixed through shrink-fit.The major part of each pin is embedded in the roller, and remaining part is stretched out from the surface of roller.This pin has big length diameter ratio, and therefore needs the major part of pin to be embedded in the roller owing to pin will experience bigger load.It is very expensive and be embedded in the roller through the major part with each pin to process the high-abrasive material of pin, thereby only has the less part of pin to stretch out from the roller surface, and most expensive material does not experience wearing and tearing, and this is the underutilization to high-abrasive material.This also makes makes this wear resistant roll cost height.Therefore, it will be favourable being partly embedded in each pin less in the surf zone of roller.Consider that in order to bear the top load of generation in operation pin must accurately mate with the hole each other, it must be with high-caliber precision manufacturing, and owing to the whole periphery of roller is coated with pin, makes this roller and will be very time-consuming procedure.Preferably, lower to the required precision of hole and pin, and to use be not column, thereby but difform high-abrasive material to optimize the intensity of high-abrasive material be favourable with the working life that prolongs roller.

Summary of the invention

The purpose of this invention is to provide a kind of wear resistant roll, eliminate or reduce described shortcoming through this wear resistant roll.

Realize this point through following wear resistant roll; The type that this wear resistant roll is in the preorder to be mentioned; It is characterized in that after being arranged on wear member in the recess, at least some the material plastic deformations around each recess, and the material of distortion changes the shape of recess and wear member is fixed to roller.

Like this, because the plastic deformation that the is used for fixing member given shape of regulation member not has difform wear member so can use.The preferable shape of member has increased its durability, causes the life-span of wear resistant roll to prolong.Use the possibility of the member of different designs to make it maybe it is designed to only need a bit of of member be embedded in the roller.In addition, owing to realize the fixing of member through distortion of materials, lower to the requirement of the tolerance between wear member and the recess.For above-mentioned reasons, make and safeguard that the cost of this wear resistant roll is low relatively.

As long as can be through the controlled plastic deformation around the roll material being fixed on the member of high-abrasive material the surf zone of roller; And as long as this shape in the running of roller for roller provides enough intensity with bearing load, then the member of high-abrasive material can have multiple possible shape.Preferred each wear member be included in this member axially at least one section; The cross-sectional area of this section is littler than the cross-sectional area near the section of the bottom of recess of this member, and some material deformations around the recess are up to forming permanent the connection with the section with smaller cross-sectional area.Should be appreciated that, this member axially be the direction that member stretches out from the roller surface.Like this, guarantee that deformable material keeps member and is fastened to roller.This wear member can be rotational symmetric, member axially on have at least one tilting section, wherein the wideest part of tilting section is oriented to the bottom near recess.Preferably, tilting section has the primary circle cone-shaped.Wear member can not be rotational symmetric, but for example rectangle, square, ellipse or pentagon.

Preferably, the only part of wear member is embedded in the roller, and the remainder of member is outstanding from the surface of roller, and wherein wear member is made up of the material harder than the material of roller.

Recess can have multiple possible shape, as long as can wear member be fixed in the recess through the plastic deformation of roll material.Recess can be roller axially on cannelure, perhaps in the lip-deep hole of roller.If recess is a cylindrical cavity, then the diameter in hole can be greater than the degree of depth in hole.The complementary member in this hole can have little length diameter ratio, and compares big girth with the ledge of member.Because member has the bigger surface area that is embedded in the roller to bear the load that applies, so member does not need to be embedded in the roller very deeply.

Realize the plastic deformation of the material around the member through press tool, instrument around the part of one or more members, is being pressed against on the roll material near the member at least.Pressure on the material continues up to the plastic deformation that realizes requirement, and this is the feasible moment that member is fixed to roller of alteration of form degree of recess.Usually produce pressure through hydraulic pressure to instrument.

Description of drawings

The accompanying drawing of referenced in schematic is more specifically explained the present invention, and wherein

Fig. 1 shows the cutaway view according to wear resistant roll of the present invention,

Fig. 2 show wear member difformity and

Fig. 3 shows the finite element figure through the fixing wear member of the plastic deformation of roll material.

The specific embodiment

Fig. 1 shows the cross section of wear resistant roll 1, and wherein before the roll material around member 3 received plastic deformation, wear member 3 was set in the complementary recess 2 in the roller 1.Recess 2 is the blind holes with straight cylindrical wall, and member 3 has last column section, middle conical section and following column section.Member can have other shape, if each member 3 this member 3 axially on comprise at least one section, the area of its cross section is littler than the cross-sectional area near the section of the bottom of recess 2 of member 3.Like this, the material of distortion can be fixed to roller 1 with wear member 3.The instrument 4 that centers at least a portion of member 3 is pushed against on the roll material near member 3, realizes the plastic deformation of expection up to roll material.The distortion of roll material continues up to being fixed to roller 1 owing to member 3, and the roll material of this distortion forms and is connected with the permanent of middle conical section.Under member 3 rotational symmetric situation, instrument 4 is annular.If use the member 3 of other shape, then according to this concrete shape fabrication tool 4.

(not shown) is applied between wear member 3 and the recess 2 intermediate materials so that member 3 is retained to roller 1 in another embodiment.In this case, not roll material but intermediate materials will experience plastic deformation.In this case,, be not only member 3, also have recess 2 must have the long-pending design of varying cross-section in order to be suitable for.Be used for the intermediate materials of plastic deformation through use, realized can large-scale material being used for the purpose of retaining member 3.

Fig. 2 shows difform wear member 3.Only show the main geometry of member 3, and do not comprise member 3 is fixed to roller 1 needed side or further feature.Showing rectangle, column, oval-shaped and pentagonal member 3, is available but also have other shape.The preferred geometries of member 3 will especially depend on pending material and be applied to the power on the roller 1.Recess 2 is manufactured into corresponding with the shape of member 3.

Fig. 3 shows the finite element figure (Finite Element view) of the section of wear resistant roll, and wherein the plastic deformation through roll material is fixed to roller 1 with wear member 3.Member 3 has last column section, middle conical section and following column section.Instrument 4 is pressed into roll material, and the visible in the accompanying drawings zonule experience distortion that only has around member 3, and material that should distortion forms and be connected with the permanent of middle conical section, thereby member 3 is fixed to roller 1.

Claims

1. method of producing wear resistant roll; Said wear resistant roll is used to the granular materials of crushing; Such as the tcrude ore that uses in the extractive industry, through this method, the surf zone of roller (1) is provided with a plurality of recesses (2); In each said recess (2), embed wear member (3) is arranged; It is characterized in that after being arranged in said wear member (3) in the said recess, each recess (2) at least some material plastic deformations on every side, and the said material of distortion changes the shape of said recess (2) and said wear member (3) is fixed to said roller (1).

2. the method for production wear resistant roll according to claim 1; It is characterized in that each wear member (3) this member axially on comprise at least one section; This section has the cross-sectional area than the Duan Gengxiao of the bottom of the more approaching said recess (2) of said member (3), and some material deformations around the said recess are up to forming permanent the connection with said section with small cross sectional.

3. wear resistant roll; Said wear resistant roll is used to the granular materials of crushing; Such as the tcrude ore that uses in the extractive industry; Said wear resistant roll comprises the roller (1) that is provided with a plurality of wear members (3), and said a plurality of wear members (3) are embedded in the complementary recess in the surf zone that is arranged at said roller (1), it is characterized in that said recess (2) some material experience plastic deformations on every side; This plastic deformation changes the shape of said recess (2), and the said material of wherein distortion is fixed to said roller (1) with said wear member (3).

4. wear resistant roll according to claim 3, it is characterized in that each wear member (3) said member (3) axially on comprise that the section of at least one inclination, the wideest part of the section of wherein said inclination are oriented to the bottom near said recess (2).

5. wear resistant roll according to claim 4 is characterized in that the section of said inclination has the primary circle cone-shaped.

6. according to each described wear resistant roll among the claim 3-5, it is characterized in that said recess (2) is a cylinder hole.

7. according to each described wear resistant roll among the claim 3-5, it is characterized in that said recess (2) be said roller axially on cannelure.

8. according to each described wear resistant roll among the claim 3-7, it is characterized in that the part of only said wear member (3) is embedded in the said roller (1), and the remainder of said member stretches out from the surface of said roller (1).